I've been doing some tinkering with my mod, and I've found that you can get a Zeno Clash mod to work like a Source mod and show up in Steam.In your GameInfo.txt change the ToolsAppid to 22000 and then put your mod folder into steamapps\sourcemods\ to run it from Steam like a regular Source mod.

I've been making one for a while now, but it it's coming along slowly, mainly because of a major false start (my first design ended up taking up a quarter of the grid in Hammer and wouldn't compile).I'll post a few screenshots when it looks a bit more presentable.